Localized superconductivity

Magnetic Properties of the Transition to Localized Superconductivity around Columnar Defects

We consider flux lines in presence of a dense square array of columnar defects, with insulating core and radius of the order of the coherence length. The properties of the phase transition from the flux line regime to the localized superconducting state are determined here. We show that the localized superconducting state is a new vortex state because of the counterclockwise and of the clockwis...

superconductivity ∗

We present a 2+1-dimensional lattice model for the copper oxide superconductors and their parent compounds, in which both the charge and spin degrees of freedom are treated dynamically. The spin-charge coupling parameter is associated to the doping fraction in the cuprates. The model is able to account for the various phases of the cuprates and their properties, not only at low and intermediate...

Superconductivity: Microscopics

For repulsive interactions the properties of an interacting Fermi system are not qualitatively different from the noninteracting system: the quantitative values of parameters are modified as described by Fermi liquid theory. Attractive interactions however, no matter how weak, lead to an entirely new state of superconductivity. It took almost 50 years from the discovery by Kammerlingh-Onnes in ...

Superconductivity: Thermodynamics

Superconductivity and Electric Fields: a Relativistic Extension of Bcs Superconductivity

The effects of static electric fields on the superconducting state are studied within a relativistic extension of the BCS theory of superconductivity.